Central Subway

April 16, 2013 7:00 AM

The Pagoda Theater sits boarded up at the intersection of Powell and Columbus.

The Pagoda Theater sits boarded up at the intersection of Powell and Columbus.

The Pagoda Theater sits boarded up at the intersection of Powell... Photo-4479721.60486 - GreenwichTime

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The corner of Columbus and Union Streets in the heart of the North Beach neighborhood, in San Francisco.

The corner of Columbus and Union Streets in the heart of the North Beach neighborhood, in San Francisco.

The corner of Columbus and Union Streets in the heart of the North... Photo-4479722.60486 - GreenwichTime

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Every day workers remove metal plates covering access points into the area under Stockton and Geary streets to work on relocating utilities for the Central Subway in San Francisco, Calif., Friday, February 17, 2012. At the end of the work day they replace the metal plates and hammer them into place. less

Every day workers remove metal plates covering access points into the area under Stockton and Geary streets to work on relocating utilities for the Central Subway in San Francisco, Calif., Friday, February 17, ... more

Dino Asko emerges from a manhole where he was boring holes to reroute utilities under Geary St. for the Central Subway in San Francisco, Calif., Friday, February 17, 2012.

Dino Asko emerges from a manhole where he was boring holes to reroute utilities under Geary St. for the Central Subway in San Francisco, Calif., Friday, February 17, 2012.

Dino Asko emerges from a manhole where he was boring holes to... Photo-4479725.60486 - GreenwichTime

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Francisco Esquivel shovels mud away from the construction of the slurry walls for the Central Subway project through downtown San Francisco, Calif. along Fourth Street, between Harrison and Bryant Streets, on Friday July 13, 2012. less

Francisco Esquivel shovels mud away from the construction of the slurry walls for the Central Subway project through downtown San Francisco, Calif. along Fourth Street, between Harrison and Bryant Streets, on ... more

Roland Medina, (left) and Will Stewart take core samples to determine the composition of the earth before the tunnel digging begins, on the Central Subway project through downtown San Francisco, Calif., along Fourth Street, between Harrison and Bryant Streets, on Friday July 13, 2012. less

Roland Medina, (left) and Will Stewart take core samples to determine the composition of the earth before the tunnel digging begins, on the Central Subway project through downtown San Francisco, Calif., along ... more